The cure for wet basements

Maggie Oreck

The cure for wet basements

Pretend, for a moment, that it’s spring (yes, it will come). Although snow is still deep, temperatures are rising.

What happens?

The snow will melt, sometimes rapidly, creating lots and lots of flowing water. Add a spring rainstorm to the scenario and you may be facing a serious problem.

Where will all this water go? Since the earth is still frozen, it won’t go down. It will follow the path of least resistance, according to Waters Basement Services in Buffalo, NY.

That path typically leads to the home’s foundation and, eventually, to the basement.

Rainwater isn’t the only type of moisture that seeps into basements, however, something as simple as condensation can build into puddles.

Just as condensation forms when cold outside temperatures meets warm window glass, so can that same warm air hitting a cold pipes or a concrete foundation create condensation.

Think you’re safe because your home is relatively new?

Think again. The American Society of Home Inspectors (ASHI) claims that most new homes experience basement leaks within 10 to 15 years of being built.

Worse, excess moisture leads to the development of mold. ASHI experts claim that 60 percent of homes in the U.S. have moisture in the basement and nearly 40 percent of these basements will develop mold.

More than 60 percent of basements in existing homes have basement moisture.

The key to fixing the problem is to figure out where the moisture is coming from.

Searching for the source

First, you’ll need to determine if the moisture is seeping into the basement from the outside or if it’s a result of condensation.

Thankfully, this is easy. When you find moisture on a wall, tape a piece of foil to the location. Leave it on the wall for 24 hours and then check the foil for signs of dampness.

If it’s wet on the outside, then the source of moisture is coming from inside the basement (condensation, most likely). If the underside is wet, suspect moisture intrusion from outside the home, according to John D. Wagner at ThisOldHouse.com.

Now you’ll need to pinpoint exactly where the moisture is coming from. Wagner suggests that the most likely areas are where the floor joins the walls. Then, check the ceiling for signs of water intrusion (flaking paint, discoloration, etc.).

Other areas to check for leaks include:

Beneath buckled floor boards or lifted tiles

Rotten wood

Near rusty metal surfaces, such as nails and screws

Powdery-looking deposits on concrete, stone and stucco surfaces

Fixing the Problem

The fix for your wet basement depends on the cause. If it’s condensation, airing out the basement may be the cure.

If the source of the moisture is coming from outside the home, the solution may range from filling foundation and wall cracks with epoxy to more expensive tasks, such as:

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